Question

The karyotype of an individual with Turner’s syndrome is:
A. 44A + XX
B. 45A + XY
C. 44A + XO
D. 44A+ XXY

Answer 1

Hint:- Turner syndrome is named for Henry Turner who, in 1938, was one of the first doctors to report on the disorder in the medical literature. Turner syndrome is one of the most common chromosomal disorders and likely the most common genetic disorder of females.

Complete step-by-step solution:-
Turner syndrome is a rare chromosomal disorder that affects females . The disorder is characterized by partial or complete loss that is monosomy of one of the second sex chromosomes. Turner syndrome is highly variable and can differ dramatically from one person to another.
Symptoms: Affected females can potentially develop a wide variety of short stature and premature ovarian failure, which can result in the failure to attain puberty. Most women with Turner syndrome are infertile. A variety of additional symptoms can occur including abnormalities of the eyes and ears, skeletal malformations, heart anomalies and kidney abnormalities. Intelligence is usually normal, but affected individuals may experience certain learning abilities.
So, Turners syndrome or 45, X, is a condition in which a female is partly or completely missing an X chromosome. It is due to a chromosomal abnormality in which all or part of one of the X chromosomes is missing or altered . While most people have 46 chromosomes, people with Turner's syndrome have 45. So the type of individual with Turner's syndrome is 44 A + XO
So, the correct answer is option C.

Note:- Turner syndrome may be diagnosed before birth or shortly after birth or during early childhood filled stop however, in some cases the disorder may not be diagnosed until well into adulthood, often an incidental finding. Most cases do not run in families and appear to occur randomly for no apparent reason.